Mixing and ejecting mechanism



Feb. 16 192s. 1,573,658

E. THOMPSON MIXING AND EJECTING MECHANISM v Filed May 29, 1925 INVENTOR Emezy fiompsan ATTORNEYS Masait. 16, 1926.

- UNITED STATES max 'rnonrson, or new momma, NEW Yoax.

me am: amcrma Application fled Kay 20, 1985. Serial No. 88,744.

To all whom it may concern."

Be it known that I, Emmr Tnoursox, a citizen of the United States, and a resident of New Rochelle, in the county of Westchester and State of New York, Umted States OfAmerica, have invented a new and Improved Mixin and Ejecting Mechanism, of which the fo owing is a full, clear, and exact description.

This invention relates to the class of mechanisms for mixing or constantly agitating the contents of a container such as a horizontally dis osed cylinder having a te at one end an for rapidly e'ecting the contents of the cylinder when t e gate is opened.

An object of the present invention is to improve mechanisms of the character mentioned by inco oratin therein a novel form of mixer and e ector w ich serves to quicken the mixing action, and which also serves as a means for ejecting a mixture from a cylinder or the like also forming a part of the mechanism. p 0

Another object of the present invention-1s the production of means ecially adapted for use in conjunction wit a horizontally disposed refrigerator cylinder for throwlng or pitching the contents of the cylinder in opposite directions with respect to the lonitudinal axis of the cylinder'with a-swlrlmg effect, and to keep the contents of the c linder constantly spread out with an even t ickness on the walls of the cylinder to thereby uicken the freezing time.

With t e foregoing and other objects in view the invention resides in the particular provision, construction and relative disposition of the parts hereinafter fully described and illustrated in the accompanying drawing, in which Figure 1 is a longitudinal sectional view through a cylinder in which the mixing and ejecting mechanism of the present invention is operatively arranged, the same being sh'own in elevation.

Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. 1 looking in the direction indicated by the arrows.

Fig. 3-. is a longitudinal sectional view takensubstantially in the plane indicated by the'line 3-3 of Fig. 2 and looking in the direction indicated by the arrows.

Fig. 4 is a plan view of the type of mixing and agitating element.

Fig. 5 is a side elevation of the mixing and ejecting element shown in Fig. 4.

In the present instance the mixing and ejecting mechanism is intended to be used for mixing or agitating the mixture or contents of a horizontally disposed refrigerated cylinder of an ice cream freezer, and for e'ecting the mixture or contents at a particular time when the gate of said cylinder is o ened.

. en the mixture or contents of an ice cream freezer is sufiiciently refri erated, it is im erative that it should be ischarged quic y from the cylinder which holds it in order that there may be a uniformity of solidity in the finished ice cream, because if the partly refrigerated contents is not discharged. quickly, part of the same is likely to be soft, and the other part is apt to be hard, in which event there would not only be a loss of bulk, but a difference in weight and texture of the finished product.

erefore to meet all of the above mentioned exigencies, the mechanism presently to be described is rovided. The said mechanism will inclu e a cylinder which forms a art of 'an ice cream freezer, and the said cy inder has an opening '11 in the front end thereof which is controlled by a gate 12. The said cylinder 10 receives a mixture from which ice cream is produced, and the said cylinder walls are kept cold by suitable refrigerating means, not shown. A driven shaft 13 1s disposed centrally and longitudinally of the cylinder 10 and is mounted for rotation in bearings 14 and 15 respectively supported by the rear end wall 16 and a bracket 17 arranged adjacent the front end wall 18 to which it is attached.

is-carried by the hub of the spaddle 19 and supports scra er blades 22 which keep the side wall of t e cylinder 10 free from any of the mixture in the cylinder which might adhere thereto. Pairs of arms 23 extend radially from the hub of the spaddle 19. One pair of arms 23 is disposed diametrically op osite the other pair .of arms.

'Each'pair' 0 arms has attached thereto a mixing and ejecting element 24. Each of the elements 24 comprises a plurality of blades 25 which are connected together by bridge, ieces 26, and attaching means in the form 0 end lugs 27 having apertures therein to serve for the attachment of the element to the arms 23. The blades 25 are disposed in parallelism with respect to each.

other, and said blades will be disposed at an angle with respect to the longitudinal axis of the cylinder 10 when the elements are attached. It is to be noted that the elements 24 are arranged outside of the spaddle blades in close proximity to the side wall of the cylinder 10 as shown most clearly in Fig. 2. -By virtue of the relative disposition of the blades with respect to each other it is possible to get a maximum throwing or pitchingsurface in a minimum of space in ,the cylinder, and at points where the elements will be most effective for coacting with the spaddle 19 in the mixing operation. blades 25 are so pitched or disposed that they will throw or pitch the contents of the cylinder toward the front end wall 18 and therefore in a direction opposite to that in which the blades 20 of the spaddle throw or pitch the contents. It is also to be noted that by connecting the blades 25 together in the manner shown in which the bridge pieces 26 are arranged between the adjacent blades, instead of using a single bar for ,supporting all of the blades, it is possible It is also to be noted that the bring the material in an opposite direction toward the front end wall 18, while the scraper blades 22 prevent the material from adhering to the side wall of the cylinder. The material is therefore evenly distributed and spread out in a manner which will result in the material being fully expanded and readily susceptible to the refrigerating effect produced by the cold cylinder walls. When the gate 12 is opened, the blades 25 of the elements 24 serve to bring the partly congealed contents of the cylinder toward the front end wall 18 and thereby rapidly ejects the sametlirough the opening 11. It will therefore be understood that the elements 24 not only serve in the mixing operation but also .serve effectively for ejecting the contents of the cylinder through the opening 11.

I claim:

1. A mixing and ejecting element comprising a plurality of blades, means for effecting the attachment of the blades consisting of apertured lugs, the apertures in said lugs being in axial alignment, said blades being disposed in parallelism with respect to each other and in spaced relationship, and the said blades being connected together by portions arranged respectively between adjacent blades.

2. The combination with a cylinder of an ice cream freezer, of a rotor within said cylinder, and mixing and ejecting elements carried by said rotor, each of said elements consisting of a series of blades movable in close proximity to the wall of said cylinder, said blades being arranged substantially in parallelism at an angle with respect to the longitudinal axis of said cylinder and in alignment from the front to the rear of said cylinder, the opposite front and rear ends of said blades respectively being connected by a member arranged therebetwe'en.

EMERY. THOMPSON. 

